Pretreated samples ready for combustion.We can advise you on the suitability of particular types of materials for radiocarbon dating, and we will be happy to discuss with you the most suitable way of taking a sample and packaging it to send to our laboratory. Our sample preparation laboratory is experienced in handling a wide range of materials. Original material for full laboratory processing. The Rafter Radiocarbon Laboratory is located within our National Isotope Centre (NIC) in Gracefield, Wellington. We provide a full radiocarbon dating service for a range of government, research, resource management, commercial and international clients. We continually monitor our data quality through regular radiocarbon intercomparison activities. Lower precision is obtained for very old and very small (<0.3 mg C) samples. We provide high precision measurement of 0.1 – 0.2% routinely for atmospheric samples and on request for other sample types. Our results are typically reported with 0.2-0.3% precision, equating to ☑5-25 years for Holocene samples. To obtain copies of prior results please contact us via our email form with all available sample information. All results have now been recalculated according to the international conventions, and anyone intending to use or publish such data should contact us to obtain the updated values. Results provided prior to the 1977 international agreement on Radiocarbon Reporting Conventions were originally reported relative to in-house standards. Recent results (last 10 years) require permission from the original submitter, older results are immediately shared on request. We are in the process of providing a publicly accessible archive, and until then, data for prior measurements can be provided on request. Historic radiocarbon resultsĮvery radiocarbon measurement made in our laboratory is archived. With prior arrangement, we can also accept samples that are partly or fully prepared in another laboratory (pre-treatment, CO 2 gas, graphite). Whole air for measurement of 14C from atmospheric CO 2.Inorganic shells, forams and carbonates.Our laboratory can accept most common sample types, as well as specialist services: Samples are prepared to CO 2 gas by combustion, hydrolysis or CO 2 extraction and graphitised using the iron-hydrogen method prior to measurement. Our state-of-the-art sample preparation laboratory supports a variety of physical and chemical pre-treatment techniques. We operate an NEC XCAMS instrument, installed in 2010, capable of beryllium-10 and aluminium-26 measurements, in addition to radiocarbon. We provide radiocarbon preparation and AMS measurement, research design and data interpretation services across the Earth sciences spectrum, including:
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